s13 injector problem? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

tweakin2442 · 04-21-2013, 06:09 PM

i have a s13 and put a s14 ka24de motor into it now everything runs fine. put for the longest time i was running on all 4 cylinders. well the problem was i wasnt getting singal to injector 1 so i wired it to injector 2 so im running on 4 cylinders again. now im not sure if that was the right thing to do or not. but now since ive done that when im driving and trying to get past 4k the engine cuts out and sometime the engine will die when im at the light and wont start for 10mins or so. i took my mult meter to the ecu for injector 1 and its not getting signal from the ecu. now like i said it ran fine well besides being on 3 cylinders before i did this, any suggestions

Alamo_City_210 · 04-21-2013, 06:29 PM

There was no specific question in that statement. Best bet is to bust out the FSM and track the wires to find out why there was no signal for that wire

tweakin2442 · 04-21-2013, 10:57 PM

ive already done that there's no signal coming from the ecu to the injector 1 what my question was. is should i get another ecu or is it fine that i have injector 1 wired with injector 2 cause it idles fine but im not sure how the injectors actual spray if they spray all at once or one at a time, cause at idle they all have a constant 12v from the signal

Croustibat · 04-22-2013, 02:54 AM

deleted

msglength

tweakin2442 · 04-22-2013, 09:03 AM

alright thanks dick that all i was asking. Another ECU is only like 80$ you dont have to be an ass about it.

Croustibat · 04-22-2013, 09:13 AM

deleted

msglength

tweakin2442 · 04-22-2013, 09:26 AM

look my bad, and i do know i decent amout about that stuff just not this part. i look on these forums for 2weeks looking for the answer i need and nothing. im pretty there would have been a fire it just would have added fuel in the cylinder when it wasnt needed. theres no need to get all hostile not everyone know everything about these cars right away. " by the way no father no mother was an orphan, lol" but look idc anyways.

So what i need is an different ECU then? Right?

Alamo_City_210 · 04-22-2013, 04:13 PM

Sorry I don't know the definite answer to your question but I don't think you should have two injectors wired together cause I Believe they are told to go off at different times. (Educated guess) do you got a friend that you can borrow an Ecu from to rule out that problem?

godsmack · 04-22-2013, 04:36 PM

When you have injector 1 and 2 firing at the same time you won't be running right. The injectors spray a mist and that is what is ignited. If your spark and fuel are not timed correctly you will not have proper ignition of the fuel causing your problems. Since you already tested the injector and no voltage from the ecu then you probably have a fried injector driver. Replace the ecu and re-wire injector 1 properly.

silviamang · 04-22-2013, 04:37 PM

Hi welcome.
Your injectors should always have 12v constantly to them. And yes, you "can" wire your power from injector one to injector two or to injector three etc.. That being said each of your injectors fire by ground pulses. Which means that the ecu controls each ground of the injector.
So, three things. If your injector (one) is connected to the right ecu pin, and the ecu is working, wiring it to any 12v constand source would be fine (injector two). If your injector (one) is not firing, but still has a 12v constant going to it, then that means either your wiring to your ecu is bad (the ground), or the ecu is bad. If its the latter, you cannot "piggy back" onto a different injector, or you will get the same firing sequence that injector has.

tweakin2442 · 04-22-2013, 06:27 PM

Thanks i already disconnected the injector i just wanted to hear it run on 4cylinder got the engine for so i didnt know if it would fire up on all the cylinders. and no i dont have anyone around with an s13 everyone here around me is into making there cars pretty and only going out drifting when its wet to save tires (lol). but i order another ecu for 80$ should be sometime this week. thanks for all the help

Alamo_City_210 · 04-22-2013, 06:53 PM

Forget pretty!!! I like mine to work lol. Let us know how it goes when you swap that Ecu.

s13mikesr20 · 04-22-2013, 06:56 PM

ive ran into this problem with a friends car just dont buy 4 new injectors will not fix the problem never got the chance to see it fixed though he just pulled motor and went 2j lol

tweakin2442 · 04-22-2013, 07:09 PM

Thanks everyone il tell yall whats going on

tweakin2442 · 04-22-2013, 07:34 PM

ok one more thing i order another ecu its a 28 A11-B44 g70 and mines is a 24 A11-B44 g07 is there a difference?

04-21-2013, 06:09 PM	#1
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	s13 injector problem? i have a s13 and put a s14 ka24de motor into it now everything runs fine. put for the longest time i was running on all 4 cylinders. well the problem was i wasnt getting singal to injector 1 so i wired it to injector 2 so im running on 4 cylinders again. now im not sure if that was the right thing to do or not. but now since ive done that when im driving and trying to get past 4k the engine cuts out and sometime the engine will die when im at the light and wont start for 10mins or so. i took my mult meter to the ecu for injector 1 and its not getting signal from the ecu. now like i said it ran fine well besides being on 3 cylinders before i did this, any suggestions

04-21-2013, 06:29 PM	#2
Alamo_City_210 Zilvia Member Join Date: Aug 2012 Location: san antonio tx Posts: 190 Trader Rating: (2) Feedback Score: 2 reviews	?? There was no specific question in that statement. Best bet is to bust out the FSM and track the wires to find out why there was no signal for that wire

04-22-2013, 02:54 AM	#4
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 43 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	deleted msglength Last edited by Croustibat; 04-22-2013 at 09:34 AM.. Reason: dickhead not worth my time

04-22-2013, 09:13 AM	#6
Croustibat Nissanaholic! Join Date: Aug 2011 Location: France - Toulouse Age: 43 Posts: 1,851 Trader Rating: (0) Feedback Score: 0 reviews	deleted msglength Last edited by Croustibat; 04-22-2013 at 09:33 AM.. Reason: dickhead not worth my time

04-21-2013, 10:57 PM	#3
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	ive already done that there's no signal coming from the ecu to the injector 1 what my question was. is should i get another ecu or is it fine that i have injector 1 wired with injector 2 cause it idles fine but im not sure how the injectors actual spray if they spray all at once or one at a time, cause at idle they all have a constant 12v from the signal

04-22-2013, 09:03 AM	#5
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	alright thanks dick that all i was asking. Another ECU is only like 80$ you dont have to be an ass about it.

04-22-2013, 09:26 AM	#7
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	look my bad, and i do know i decent amout about that stuff just not this part. i look on these forums for 2weeks looking for the answer i need and nothing. im pretty there would have been a fire it just would have added fuel in the cylinder when it wasnt needed. theres no need to get all hostile not everyone know everything about these cars right away. " by the way no father no mother was an orphan, lol" but look idc anyways. So what i need is an different ECU then? Right?

04-22-2013, 04:13 PM	#8
Alamo_City_210 Zilvia Member Join Date: Aug 2012 Location: san antonio tx Posts: 190 Trader Rating: (2) Feedback Score: 2 reviews	Sorry I don't know the definite answer to your question but I don't think you should have two injectors wired together cause I Believe they are told to go off at different times. (Educated guess) do you got a friend that you can borrow an Ecu from to rule out that problem?

04-22-2013, 04:36 PM	#9
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 38 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	When you have injector 1 and 2 firing at the same time you won't be running right. The injectors spray a mist and that is what is ignited. If your spark and fuel are not timed correctly you will not have proper ignition of the fuel causing your problems. Since you already tested the injector and no voltage from the ecu then you probably have a fried injector driver. Replace the ecu and re-wire injector 1 properly.

04-22-2013, 04:37 PM	#10
silviamang Zilvia Junkie Join Date: Feb 2008 Location: Japan Posts: 318 Trader Rating: (2) Feedback Score: 2 reviews	Hi welcome. Your injectors should always have 12v constantly to them. And yes, you "can" wire your power from injector one to injector two or to injector three etc.. That being said each of your injectors fire by ground pulses. Which means that the ecu controls each ground of the injector. So, three things. If your injector (one) is connected to the right ecu pin, and the ecu is working, wiring it to any 12v constand source would be fine (injector two). If your injector (one) is not firing, but still has a 12v constant going to it, then that means either your wiring to your ecu is bad (the ground), or the ecu is bad. If its the latter, you cannot "piggy back" onto a different injector, or you will get the same firing sequence that injector has.

04-22-2013, 06:27 PM	#11
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Thanks i already disconnected the injector i just wanted to hear it run on 4cylinder got the engine for so i didnt know if it would fire up on all the cylinders. and no i dont have anyone around with an s13 everyone here around me is into making there cars pretty and only going out drifting when its wet to save tires (lol). but i order another ecu for 80$ should be sometime this week. thanks for all the help

04-22-2013, 06:53 PM	#12
Alamo_City_210 Zilvia Member Join Date: Aug 2012 Location: san antonio tx Posts: 190 Trader Rating: (2) Feedback Score: 2 reviews	Forget pretty!!! I like mine to work lol. Let us know how it goes when you swap that Ecu.

04-22-2013, 06:56 PM	#13
s13mikesr20 Nissanaholic! Join Date: Sep 2011 Location: las vegas Age: 34 Posts: 1,792 Trader Rating: (8) Feedback Score: 8 reviews	ive ran into this problem with a friends car just dont buy 4 new injectors will not fix the problem never got the chance to see it fixed though he just pulled motor and went 2j lol

04-22-2013, 07:09 PM	#14
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	Thanks everyone il tell yall whats going on

04-22-2013, 07:34 PM	#15
tweakin2442 Join Date: Mar 2013 Location: san antonio Age: 33 Posts: 10 Trader Rating: (0) Feedback Score: 0 reviews	ok one more thing i order another ecu its a 28 A11-B44 g70 and mines is a 24 A11-B44 g07 is there a difference?